高效固液分离器处理低浊水研究卢金锁

、、[1-2]。[3]。。1、、[4]。、2、、。12。。、、。22.11。、12111.7100552.01002020NTU。2。“2+”PAM10～20NTUPACPAM160.5mg·L-12、4.2%。TU991.22A1000-3770(2010)09-0101-0052009-11-30(2006BAJ08B08)(20080511)(SJ08-ZT07)[e-mail]36920109TECHNOLOGYOFWATERTREATMENTVol.36No.9Sep.,2010101DOI:10.16796/j.cnki.1000-3770.2010.09.027、。、、、380mm、4.45m2m2.1m0.35m。360mm×360mm750mm60°。SKDN3270mDN80。2.21d。。2.3。PAC1%12×106PAM0.1%。2.42。22+22。PAC①、②PAM②、③、④①、②2。33.1PAC、PAM61PAC①PAM②2PAC①PAM③3PAC①PAM②4PAC①②、PAM③(5PAC②、PAM③6PAC、PAM②。10～20NTU2.6m3·h-1PACPAM15、1.4mg·L-19.61%4PAC3NTU、。1。1、2、5、6PAC。PAC2Fig.2Processflowofpilottest

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II 1234561～3mm、0.5～2mm、1～4mm、2～4mm、13.715.29.38.923.425.81Tab.1Sub-programsofstaticmixerinseriessuspended-layercharacteristicsandthequalityofoutflow/NTU1Fig.1Flowchartoftheexperimentsystem369102PAC2。56122。PAM3PACPAM。2PACPAM。4PACPAC。PACPACPAC。2.6m3·h-1PAM0.98mg·L-1、PAC1.24mg·L-111.1%6r·min-1PAC3。34PACPAC。3.2+PAC、PAM+2.0～3.0m3·h-1、10～20NTUPACPAM2～10、0.2～1.0mg·L-11.0%～10.0%。2.04m3·h-130cm·min-1。1PACPAM①④①②2PAM④②①②PAC3PAC①②②、③、④PAM。3.2.1PACPAM①④6、0.5mg·L-14.21%22。22②①。PAC①②。②3。2～4mm4～7mm5.32.32Tab.2Differentsludgereturnpointseffectonsuspensionlayerandtheturbidityofoutflow/NTU3PAC(4)Fig.3Changesofoutflowqualityofsub-program(4)inbatchdosingPAC0204060801001200246810

/NTU/min
10333.4%。3.2.2PACPAM0.6mg·L-1④②4.2%PAC6mg·L-12PAC4。4PAC①②2①②PACPAC②。PAC①PAC4。4PAC。PAC2.0～8.0mg·L-1PAC3NTU1.8NTUPAC8.0～14.0mg·L-1PAC。PAC8.0mg·L-1PAC6.0mg·L-1。3.2.3PAMPAC①6mg·L-1②4.2%PAM0.5mg·L-13PAC5。2、4、5PAM。PAMPAM②PAMPAM③①PAC②③PAMPAM④③PAM。PAM④PAM5。5PAM0.5mg·L-1PAM0.5～0.7mg·L-12.3NTUPAM0.8mg·L-10.5mg·L-1PAM。4～7mm4mm2.13.84PACTab.4PACdosingpointeffectonsuspensionlayerandtheturbidityofoutflow/NTU/NTU6.83.82.95.35.0/%1.42.83.44.25.63Tab.3Sludgereturnratioeffectontheturbidityofoutflow4PACFig.4EffectofPACdosageontheturbidityofoutflow
024681012141601234567
/NTUPAC/mgL6～10mm4～7mm0.82.35PAMTab.5PAMdosingpointeffectonsuspensionlayerandtheturbidityofoutflow/NTU5PAMFig.5EffectofPAMdosageontheturbidityoftheoutflowwater
0.30.40.50.60.70.80.91.00246810
/NTUPAM/mgL369104HIGHSALTCONCENTRATIONSORGANICWASTEWATERTREATEDBYPHOTOSYNTHETICBACTERIAKongXiuqin1,ZhaoFeng1,ShiXiaofeng1,RenRuifang1,XingXinhui2(1.FacultyofEnvironmentalEngineering,PetrolandChemistryDepartment,LanzhouUniversityofTechnology,Lanzhou730050,China;2.InstituteofBiochemicalEngineering,DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,ChinaAbstract:Thisexperimentstudiedthefeasibilityandfeatureoftreadinghighsaltconcentrationsorganicwastewaterbyphotosyntheticbacteria.Theresultshowedthatitcouldgetsomephotosyntheticbacteriaflorawhichcanendurehighsaltconcentrationandhavehighdegradationactivitybydomesticationaftersometimeinhighsaltconcentrationorganicwastewater.Whenthechlorideconcentrationwas73g·L-1,theCODremovalratecouldreach77%.Whenthechlorideconcentrationincreasedordecreasedsuddenly,thephotosyntheticbacteriacouldadaptquickly.Sotheeffluentqualitywasn'tinfluenced.Keywords:highsaltconcentrations;organicwastewater;photosyntheticbacteria;CODEXPLORATORYSTUDYONEFFICIENTSOLID-LIQUIDSEPARATORTREATINGLOWTURBIDITYWATERLuJinsuo,YuJian,HuangTinglin,TangJianxin(SchoolofEnvironmentalandMunicipalEngineeringXi'anUniversityofArchitectureandTechnologyXi'an710055,ChinaAbstract:Withthehelpofsludgereturntoimprovetheconcentrationofparticlesinrawwater,theefficientsolid-liquidseparationtechnology,whichhasalreadytreatedhighconcentrationofparticlesofrawwatersuccessfully,nowistriedtopurifythelowturbidity(20NTUbelow)ofrawwater.Analyzingthedifficultiesoflowturbidityofrawwaterpurification,combiningwithhighlyefficientsolid-liquidseparationtechnologyrequirementsforcoagulation,thenputtingforwardsuchastwo-stagestaticmixerandthepipereactorofavarietyofcoagulationtechnologycombinationtestprograms,inthepilotplantexperimentsthepurificationprocessesandcontrolparametersoflowturbiditywateraretested.FoundingPAMdosingpointandsludgereturnpointareimportanttotheformationofsuspensionlayerofefficientsolid-liquidseparationandoutflowof“two-stagestaticmixer+tubularreactor+efficientsolid-liquidseparator”processsystem.Undertherawwater10～20NTUconditions,PACandPAMareaddedbeforeonestagestaticmixerandtubularreactor,dosagesare6mg·L-1and0.5mg·L-1,sludgereturnpointisbeforethetwo-stagestaticmixer,sludgereturnratiois4.2%,theoutflowturbidityisthelowest.Keywords:drinkingwater;lowturbidity;purification;solid-liquidseparation;sludgereturn4。2++10～20NTU2NTU。PAM。PAC12PAM。PACPAM60.5mg·L-1、4.2%。PAC。[1],,,.[J].,2003,29(3):9-12.[2],,.[J].,2002,33(4):23-25.[3],,.[J].,1998,31(5):45-48.[4],.[M].:,2005:115-118.92!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!105